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Date: Mon, 9 Feb 2009 10:26:57 -0800
From: Ray Van Dolson <rvandolson@esri.com>
Subject: Re: [linux-lvm] Dead device and cleaning up LVM
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To: linux-lvm@redhat.com

On Mon, Feb 09, 2009 at 09:58:04AM -0800, Ray Van Dolson wrote:
> On Mon, Feb 09, 2009 at 09:45:46AM -0800, Bryn M. Reeves wrote:
> > Ray Van Dolson wrote:
> > > Anyone know how I can remove this device both from the system and from
> > > LVM safely?  I can reboot, but saving that as a last resort if
> > > possible.
> > 
> > You don't mention the name of your VG/LV but you should be able to 
> > remove the active lvm devices with "dmsetup remove", e.g.:
> > 
> > dmsetup remove $VG-$LV
> > 
> > For each LV in each VG that was using the iSCSI devices.
> 
> Beautiful.  This did the trick!  I can now also unload the iSCSI kernel
> modules correctly on the initiator.
> 

Also, just an FYI in case anyone else runs across this thread... to get
my filesystem back (pvscan didn't detect the LVM at all):

  # pvcreate --uuid 3HpAVg-fRz0-HWXp-EFxK-khVO-IvN6-J4a6w1 /dev/sdb
  (Found the old UUID by examining the /etc/lvm/backup directory)
  # vgcfgrestore FTP1
  # vgchange -ay FTP1
  # fsck.ext3 /dev/FTP1/LogVol00
  # mount -a

Back in action!

Ray